M54HCT174
M74HCT174
February 1993
HEX D-TYPE FLIP FLOP WITH CLEAR
B1R
(Plastic Package)
ORDER CODES :
M54HCT174F1R
M74HCT174M1R
M74HCT174B1R
M74HCT174C1R
F1R
(Ceramic Package)
M1R
(Micro Package)
C1R
(Chip Carrier)
PIN CONNECTIONS (top view)
NC =
No Internal
Connection
INPUT AND OUTPUT EQUIVALENT CIRCUIT
DESCRIPTION
.
HIGH SPEED
f
MAX
= 56 MHz (TYP.) AT V
CC
= 5 V
.
LOW POWER DISSIPATION
I
CC
= 4
A (MAX.) AT T
A
= 25
C
.
COMPATIBLE WITH TTL OUTPUTS
V
IH
= 2V (MIN.) V
IL
= 0.8V (MAX)
.
OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
.
SYMMETRICAL OUTPUT IMPEDANCE
IOH
= I
OL
= 4 mA (MIN.)
.
BALANCED PROPAGATION DELAYS
t
PLH
= t
PHL
.
PIN AND FUNCTION COMPATIBLE WITH
54/74LS174
The M54/74HCT174 is a high speed CMOS HEX D-
TYPE FLIP-FLOP WITH CLEAR fabricated in silicon
gate C
2
MOS technology. It has the same high speed
performance of LSTTL combined with true CMOS
low power consumption.
Information signals applied to D inputs are transfered
to the Q output on thepositive going edge of the clock
pulse. When the CLEAR input is held low, the Q out-
puts are held low independently of the other inputs.
This integrated circuit has input and output charac-
teristics that are fully compatible with 54/74 LSTTL
logic families. M54/74HCT devices are designed to
directly interface HSC
2
MOS systems with TTL and
NMOS components. They are also plug in replace-
ments for LSTTL devices giving a reduction of power
consumption. All inputs are equipped with protection
circuits against static discharge and transient excess
voltage.
1/11
PIN DESCRIPTION
PIN No
SYMBOL
NAME AND FUNCTION
1
CLEAR
Asynchronous Master
Reset (Active LOW)
2, 5, 7, 10,
12, 15
Q0 to Q5
Flip-flop Outputs
3, 4, 6, 11,
13, 14
D0 to D5
Data Inputs
9
CLOCK
Clock Input (LOW to
HIGH, edge triggered)
8
GND
Ground (0V)
16
V
CC
Positive Supply Voltage
IEC LOGIC SYMBOL
TRUTH TABLE
INPUTS
OUTPUTS
FUNCTION
CLEAR
D
CK
Q
L
X
X
L
CLEAR
H
L
L
H
H
H
H
X
Q
n
NO CHANGE
X: Don't Care
LOGIC DIAGRAM
M54/M74HCT174
2/11
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
CC
Supply Voltage
-0.5 to +7
V
V
I
DC Input Voltage
-0.5 to V
CC
+ 0.5
V
V
O
DC Output Voltage
-0.5 to V
CC
+ 0.5
V
I
IK
DC Input Diode Current
20
mA
I
OK
DC Output Diode Current
20
mA
I
O
DC Output Source Sink Current Per Output Pin
25
mA
I
CC
or I
GND
DC V
CC
or Ground Current
50
mA
P
D
Power Dissipation
500 (*)
mW
T
stg
Storage Temperature
-65 to +150
o
C
T
L
Lead Temperature (10 sec)
300
o
C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
(*) 500 mW:
65
o
C derate to 300 mW by 10mW/
o
C: 65
o
C to 85
o
C
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
V
CC
Supply Voltage
4.5 to 5.5
V
V
I
Input Voltage
0 to V
CC
V
V
O
Output Voltage
0 to V
CC
V
T
op
Operating Temperature: M54HC Series
M74HC Series
-55 to +125
-40 to +85
o
C
o
C
t
r
, t
f
Input Rise and Fall Time (V
CC
= 4.5 to 5.5V)
0 to 500
ns
M54/M74HCT174
3/11
AC ELECTRICAL CHARACTERISTICS (C
L
= 50 pF, Input t
r
= t
f
= 6 ns)
Symbol
Parameter
Test Conditions
Value
Unit
V
CC
(V)
T
A
= 25
o
C
54HC and 74HC
-40 to 85
o
C
74HC
-55 to 125
o
C
54HC
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
t
TLH
t
THL
Output Transition
Time
4.5
8
15
19
22
ns
t
PLH
t
PHL
Propagation
Delay Time
(CK - Q)
4.5
18
28
35
ns
t
PHL
Propagation
Delay Time
(CLR - Q)
4.5
18
28
35
42
ns
f
MAX
Maximum Clock
Frequency
4.5
30
54
24
MHz
t
W(H)
t
W(L)
Minimum Pulse
Width
(CLOCK)
4.5
8
15
19
22
ns
t
W(L)
Minimum Pulse
Width
(CLR)
4.5
8
15
19
22
ns
t
s
Minimum Set-up
Time
4.5
2
10
13
15
ns
t
h
Minimum Hold
Time
4.5
5
6
8
ns
t
REM
Minimum
Removal Time
4.5
5
5
5
5
ns
C
IN
Input Capacitance
5
10
10
10
pF
C
PD
(*)
Power Dissipation
Capacitance
68
pF
(*) C
PD
is defined as the value of the IC's internal equivalent capacitance which is calculated from the operating current consumption without load.
(Refer to Test Circuit). Average operting current can be obtained by the following equation. I
CC
(opr) = C
PD
V
CC
f
IN
+ I
CC
/6 (per FLIP/FLOP)
And the total CPD when N pcs of FLIP FLOP operate can be gained by the following equation: CPD (total)= 38 + 15 x n
M54/M74HCT174
5/11
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